1（what) a foreign language (is)is quite clear帮忙分析句子成分,为何两个is

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1（what) a foreign language (is)is quite clear帮忙分析句子成分,为何两个is
2 then Mr smith told me (why what)he was doing was very Important这是宾从吗?why是副词可以与连词连接吗?

1.what a foreign language is是主语从句第二个is后面是表语.句子意思为：外语是什么很清楚.
2.我把what he was doing 换成the meeting你能看明白吗?Mr smith told me (why the meeting )was very Important原句中what he was doing 是宾语从句的主语.也就是说宾语从句中是由一个主语从句充当主语的.

What a foreign language is is quite clear.如何翻译? What is a good way to l------ a foreign language? what is your tips of learning a foreign language? to learn a foreign language is not Is it necessary____(learn)a foreign language what foreign language ( ) at Sally is school?Chinese What is the best way to learn a foreign language?Which forei 初二英语补全对话,What is the best way to learn a foreign language?We When one is learning a foreign language,what must he do. To learn a foreign language is------in our work.(help) A knowledge of foreign language is always useful. It is very easy to learn a foreign language